User Guide
<%27
7UGT
U/CPWCN
80 2YHUYLHZ
,17(558375(63216(
2YHUYLHZ
$QLQWHUUXSWDOORZVSHULSKHUDOGHYLFHVWRVXVSHQG&38RSHUDWLRQDQGIRUFH
WKH&38WRVWDUWDSHULSKHUDOVHUYLFHURXWLQH7KLVVHUYLFHURXWLQHXVXDOO\
LQYROYHVWKHH[FKDQJHRIGDWDVWDWXVRUFRQWUROLQIRUPDWLRQEHWZHHQWKH
&38DQGWKHSHULSKHUDO:KHQWKHVHUYLFHURXWLQHLVFRPSOHWHGWKH&38
UHWXUQVWRWKHRSHUDWLRQIURPZKLFKLWZDVLQWHUUXSWHG
,QWHUUXSW(QDEOH'LVDEOH
7KH=&38KDVWZRLQWHUUXSWLQSXWVDVRIWZDUHPDVNDEOHLQWHUUXSW
,17
DQGDQRQPDVNDEOHLQWHUUXSW10,7KHQRQPDVNDEOHLQWHUUXSW
FDQQRWEHGLVDEOHGE\WKHSURJUDPPHUDQGLVDFFHSWHGZKHQHYHUDSHULSK
HUDOGHYLFHUHTXHVWVLW7KLVLQWHUUXSWLVJHQHUDOO\UHVHUYHGIRUYHU\LPSRU
WDQWIXQFWLRQVWKDWFDQEHHQDEOHGRUGLVDEOHGVHOHFWLYHO\E\WKH
SURJUDPPHU7KLVURXWLQHDOORZVWKHSURJUDPPHUWRGLVDEOHWKHLQWHUUXSW
GXULQJSHULRGVZKHQKLVSURJUDPKDVWLPLQJFRQVWUDLQWVWKDWGRQRWDOORZ
LQWHUUXSW,QWKH=&38WKHUHLVDQLQWHUUXSWHQDEOHIOLSIORS,))WKDW
LVVHWRUUHVHWE\WKHSURJUDPPHUXVLQJWKH(QDEOH,QWHUUXSW(,DQG
'LVDEOH,QWHUUXSW',LQVWUXFWLRQV:KHQWKH,))LVUHVHWDQLQWHUUXSW
FDQQRWEHDFFHSWHGE\WKH&38
7KHWZRHQDEOHIOLSIORSVDUH,))DQG,))
7KHVWDWHRI,))LVXVHGWRLQKLELWLQWHUUXSWVZKLOH,))LVXVHGDVDWHPSR
UDU\VWRUDJHORFDWLRQIRU,))
IFF1
IFF2
Disables interrupts
from being accepted
Temporary storage
location for IFF1